Recognized as a durable and environmentally-friendly solution to the market of solvent-free coating systems, powder coatings are electrostatically applied to a substrate and cured at relatively high temperatures to form a continuous, durable film. The structure and shape of their effect pigments alter the appearance of the coatings, as aluminum pigments appear either silver or grey metallic as a result of their shape. When applied, aluminum pigments act as "micro-mirrors," reflecting nearly all the light that interacts with them in a specular or near-specular angle.
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